Spring shackle



E. E. HENDRICKS SPRING SHAGKLE Filed Jan. 2o. 1922l @fst 23 application lcd Sanitary 20,

To all whom t may conce/m:

Be it known that l, ELI-,nin E. HEN- nnroirs, citizen of the n" ses, residing at Klamath Falls, in the county of Klamath and @tate ojf @regom have invented certain new and useiul Improvements in Spring tihaclrles, of which the following is a specification.

ihe present invention relates to a spring shaclr e device or shoclr absorber, and has for its obiect to provide a device of this character which embodies novel features of construction whe eby two elements such as the sections orn a spring can be yieldably connected in a very eiiicient and satisfactory manner.

Further objects o the invention are to provide a device of this character' which has a strong andrugged construction so that it will successfully withstand the hard usage to which such contrivances are subjected in actual practice, which is comparatively simple and inexpensive in its construction, and which functions as a cushioning or shock absorbing device in a most satisfactory manner.

W ith these and other objects in view, as will more fully appear as the description proceeds, the invention consists in certain combinations and arrangements of the parts, the novel features whereot1 are pointed out in the appended claims.

For `a full understanding of the invention, reference is to be had to the :following description and accompanying drawings in which;`

Figure l is a side elevation of a spring shackle device which is constructed in accordance with the invention.

Figure 2 is a similar view with the spring elements appearing in section.

Figure 3 is a vertical sectional view on the line 3-3 of Figure 2.

Figure e is a detail view of one of the eyes.

Figure 5 is a transverse sectional view on the line 5 5 of Figure 2.

Figure 6 is a detail view of the blank from which the multiple volute spring element is formed.

Corresponding and like parts are referred to in the following description and indicated in all of the views of the drawings by like reference characters.

Referring" to the drawings, which illustrate one possible embodiment of the inven- Farms, manson.

Sl'ACKLE.

Serial No. 530,686.

tion, the numerals l designate the pins or bolts which are utilized for attaching, the eyes 2 of the cushioning device to the spring sections or other objects which are to be yieldabiy connected. rllie eyes 2 are arranged in pairs and are formed with stems 3 which are engaged by the ends of volute spring elements e.

These volute spring elemeits are also arranged in pairs, the elements oit each pair beine; substantially co-arzial and the aires oi the two pair oi"- spring elements being substantially parallel. The. spring elements are termed by bending; the arms formed 'by the bii'urcated ends'of a snr j bar or strip 5., such that which is shown in detail by Figure 6. rEhe middle portion of the strip 5 terms a cross bar or brace which connects the two pair of volute springs and tends to hold them in proper position relative to each other. This is a very simple and inexpensive manner oi' Jforming the spring device nfl the snringshave a rugged construction which enables them to withstand heavy stresses and to function properly cushioningr devices under difficult circumstances.

The smaller ends of the volute springl elements are secured to the stems 3 of the respective eyes 2. For this inurpose the stems 3 may be biit'urcated.y as indicated at 3l and one of the arms of the bifurcation may be narrower than the other arm by an amount equal to the thickness of the spring device as indicated quite clearly by Figure 5. so that the end oiZ the spring arm may be wound snugly around the stem and the extremity thereoie deflected laterally and secured within the bifurcation 8f. A depression or slot 6 may be provided at the base cic the bifurcation to receive and interlock with the spring arm and the spring may be secured to the stem in any suitable manner, such as bv Welding or by means otra pin 7.

The eyes 2 at opposite ends oi the shock absorbing device receive the pins or bolts l which serve as means for attaching: the device to the snrinc sections or other elements to be connected by the shackle. and the bolts 1 may be formed with angular heads which are encased bv lugs 8 unon corresponding eyes 2 to lock the bolts against rotation. rllhe opposite ends of the bolts mavhave openings 9 therein which are adapted to receive cotter pins or the like to retain bolts in position. lThe volute spring elements e are arranged in suchl a manner that the members engaged by the bolts l are yieldably connected and shocks and ars will be effectively absorbed by the shackle. The inner ends et opposed stems 3 Will engage vvith each other and form stops to limit 'further movement when the springs Vare compressed to' their 'full capacity.

Vilhile have described ene particuiar embodiment ofty theinventien in detail for iliustration punposcs7 it will be understood that many modifications a' changes can be made in the details ot construction Without departing- `in any manner from the spirit of the invention. Y f

Having thus described* my invention what l claim new and desire to secure by Letters Patent, is:

l. A shackle device ci the character described, comprising a plurality of sets of complemental rvolute spring); elements arranged side b v siteY the spring` elements otjeach set having;w au opposed relation and a common axis7 and ineansroi connecting fthe outer ends ot' the volute spring elements scribe-:l coinlirising a plurality ot coin-plemental 'setsvof volute` springgsarranged sideV by sideyconnecting means between the sets of volute sprinlSq and common rattachment means for the Correspending- 'ends oi:l the different sets of springs.

34A. shackle device of the character described, including a spring strip having the opposite ends thereof bii'urcated toV form oiverging arins which are bent to for volute spring elements arranged in pairs and the element-s of each pair having an opposed reiationi and attachment means associated with the spring,` elements. y

et. fi shackle device 'of thev character den scribed9 including aY plurality of comple-1 and attachment boltsengab the4 oppositeV sets of eyes. Y y v I 5. fr shackle device of the character describedr including' a spring strip having theends thereof'bitucated to Jforni Vdiverge ing arms which are bent to provide volutey spring elements? said spring elen'ients being arranged inconposed pairs, attachment eyes securedv to. the volute spring;` elements, and attachment bolts engaging the opposite sets of eyes.

6. A shackle device of the character defV scribed, rincluding` a pair of oppositely eX- tendingv volute springs connected Vat their inner ends, and attachmentmembers at the' outer ends ot the volute springysaid attachmeiit members being formed with biturf-ated stems around which the spring arms are bent. the extremities ot the arms being; anchored Within the bifucations.

ln testimony whereof l affix my signature.

ELMER E. HENDRIGKS 

